/Engine/Plugins/MovieScene/SequencerScripting/Source/SequencerScripting/Public/ExtensionLibraries/MovieSceneFolderExtensions.h
Add a child folder to the target folder
True if the addition is successful
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Sequencer|Sequence", Meta=(ScriptMethod)) static bool AddChildFolder ( [UMovieSceneFolder](API\Runtime\MovieScene\UMovieSceneFolder) * TargetFolder, [UMovieSceneFolder](API\Runtime\MovieScene\UMovieSceneFolder) * FolderToAdd )